Although I have largely abandoned the Delorme Street Atlas software, for various reasons, (I'm not here to trash it) I had a positive experience with it, just the other week.
We took an impromptu trip to the coast, one weekend, using other navigation solutions but we missed a turn on the dark trek back. When I realized we were headed the wrong way and that my sweet, but navigationally-challenged companion couldn't help, I pulled over.
We pulled out my iPad, and two Palm Pre's - three devices on two networks - and still couldn't get a clear idea of where we were.
Annoyed, I grabbed my old Palm Treo 755p and turned on the Street Atlas Handheld software, charged-up my Earthmate Bluetooth gps receiver, and had a lock and a map of our location in relatively short-order. We went back, took a shortcut, then got back on track (without going alllllll the way back the way we came) and all was well.